【整式的除法】整式的除法.我马上就要去补课了.1.[(x-1)(x+2)+2]÷x...
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解决时间 2021-02-11 10:52
- 提问者网友:末路
- 2021-02-11 03:13
【整式的除法】整式的除法.我马上就要去补课了.1.[(x-1)(x+2)+2]÷x...
最佳答案
- 五星知识达人网友:空山清雨
- 2021-02-11 04:04
【答案】 1.原式=(x^2+2x-x-2+2)÷x=x+1
2.原式=(6^an+2-9an+1)÷3^an-1
=(2^an+2)x3^(an+2-an+1)-3^2(an+1)÷3^an-1
=3^3(2^an+3)-3^(2an+2-an+1)
=3^3(2^an+2)-3^(an+3)+1
3.原式=9x^4-18x^3y-(3y^2-4x^3y)
=9x^4-14x^3y-3y^2
4.原式=[x^2-y^2-(x^2-2xy+y^2)+2xy-2y^2]÷4y
=(x^2-y^2-x^2+2xy-y^2+2xy-2y^2)÷4y
=(4xy-4y^2)÷4y
=x-y
2.原式=(6^an+2-9an+1)÷3^an-1
=(2^an+2)x3^(an+2-an+1)-3^2(an+1)÷3^an-1
=3^3(2^an+3)-3^(2an+2-an+1)
=3^3(2^an+2)-3^(an+3)+1
3.原式=9x^4-18x^3y-(3y^2-4x^3y)
=9x^4-14x^3y-3y^2
4.原式=[x^2-y^2-(x^2-2xy+y^2)+2xy-2y^2]÷4y
=(x^2-y^2-x^2+2xy-y^2+2xy-2y^2)÷4y
=(4xy-4y^2)÷4y
=x-y
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- 1楼网友:北城痞子
- 2021-02-11 05:03
好好学习下
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